These are traditional Kiso Hinoki chopsticks. They are coated only with natural lacquer, without using any chemical paints, color additives, or thinners for easy application. Kiso Hinoki Chopsticks, Set of 5 These chopsticks are made from Kiso Hinoki and finished with genuine lacquer using the suri-urushi (lacquer rubbing) technique. I believe you can use these naturally lacquered Kiso Hinoki chopsticks with peace of mind because the coating process does not involve any additives. I received these from an acquaintance, but I have no use for them, so I am offering them for sale. Please take this opportunity to purchase them.